SHANNON SHIEH
Prescription History 1982306262
Physician Assistant in Rialto, CA
What does Shannon Shieh prescribe?
In 2024, Shannon Shieh wrote 64 Medicare prescriptions for 4 medications. The most prescribed was Amlodipine Besylate, with 20 prescriptions.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Shannon Shieh prescribes.
Medications 4 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other California prescribers.
What it is used for
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Shannon Shieh wrote 20 prescriptions for Amlodipine Besylate, about 14% as often as the typical California prescriber of it (141). Medicare paid $3.36 per fill, versus $7.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Rosuvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Shannon Shieh wrote 18 prescriptions for Rosuvastatin Calcium, about 18% as often as the typical California prescriber of it (101). Medicare paid $14.31 per fill, versus $15.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Shannon Shieh wrote 15 prescriptions for Atorvastatin Calcium, about 7% as often as the typical California prescriber of it (202). Medicare paid $5.20 per fill, versus $10.47 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Shannon Shieh wrote 11 prescriptions for Glipizide, about 22% as often as the typical California prescriber of it (49). Medicare paid $5.06 per fill, versus $10.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Shannon Shieh’s prescriptions
What does Shannon Shieh prescribe most?
In 2024 Medicare Part D data, Shannon Shieh's most prescribed medications were Amlodipine Besylate (20), Rosuvastatin Calcium (18) and Atorvastatin Calcium (15).
How does Shannon Shieh's prescribing compare with other California prescribers?
Of the 4 medications with a state comparison, Shannon Shieh prescribes 4 less often than the typical California prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Shannon Shieh prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the California prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
